Flood in Lower Yukon River, Alaska

Flood May 22, 2026 – May 25, 2026 · Lower Yukon River, Alaska

$125K

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

The NWS River Watch team flying the Lower Yukon reported an ice jam forming roughly 8 miles downstream of Marshall caused the Yukon River to back up rapidly into the main town, adjacent sloughs, tributaries, and wetlands. Water levels finally began a slow recession of up to one foot on Saturday, May 23.

The wider storm

As the third week of May 2026 unfolded, the dynamic breakup front stalled repeatedly along the Lower Yukon, creating a cascading sequence of severe jams and flooding. This period involved massive downstream surges as well as backwater effects in tributaries like the Andreafsky and Chuilnuk.

Began near Pilot Station (61.9269, -162.5918).

Source: NOAA Storm Events Database, event 1340704. Narratives are written by the National Weather Service forecast office that issued the report.

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